Automatic wood-grinding mill.



` P.` c. SCHAANNING.. Aujomypc woon Gnmnm' MILL.. Arrucnq man mnu. ma.

. t its? Inv anim:1 E. E- S nhuunrilg Patented Nov.4 2o, 1917.

f PATEuit" oFnIoE, l

n'cnnrsrmnfscnnniuuq, or VVINDERN Pn. c'nnr'smrsmn, Nunwnr, Assrexon.

Y or annum To mmm wAHLsTnou, or vn'rmeros, Nonwmr.

Auroluric woon-GBINDING' MILL.

lpeclilcatioliof Letters Patent. Iivatnt'ed NOV. 20, 1 917.

1 pnt-summed nnuaryzmaxs. sum1 no. 74,091.

10 theilmanufucturc offwo'odpulp orthelike thefemptied box is opened, hovemto'` rush rcll the box, ywhereoftei:V n A, mijn 'siminrrmember which iisttliefstonm Each time a -a hydrulicmpiston, forces l ecmp'ty', it is ogain opened l i Against thestoneare conducted, more or less [frame fed rectilinearly forward'against the end faces, in orde; to transmit the pressing `force ofthe frnmdafely 'to the inner portion ofthe oolumm f ioneovlr lthey exist" I `ferent-lengthulwuys existing, which cannot vnot leest,

to the conditions varyingv in actual 'proctioe,l.

und'onjaccount hereof there has not heretof'ore-so fai-1 ns the resent rapplicant knows-existed any satis uctoi'y solution of then roblem. 460

T e present invention Ahns for its object to provide .an automatic grinding apparatus', which' is constructed so as to puy most possibleregard to the practical conditions and which therefore, muyhfllll 4all requirementsv withregnrd to a quite automatic operation.4

A constru'ctional 'form of the apparatus is illustrated in theuccomponying drawings,

Figuresland Quare vertical sections taken V'l0 at planes perpendicular rto euch other. v L The 'grinding stone '1- is "mounted as usual on u shaftJ--2--- und its lower hulf. projectsdown into the outlet channel -3-`.

75 radially, one or, more block columns, only .one of which is shown in the drawin vfor` the `sake of simplicity.- `This block co umn shall `be rectilinear, at all events onl the portion upon which the fecdin members uct.- The column'mu be guided in different w manners: Inthe fol owing only the method e is described which is thought to be the most suitable Ione.

Theimentionis based upon automati- 85 in the fact that the catching. und feedingmembers nrc carried and journaled'byu grinding-stone in such, e manner that theyA are ,able to perform `nn-indcpendent tightening or clamping movement kin the cros's vdircction'o thv-Mock column toward the said v In thislm'annerthe catching members-mo be obtained .hyfgroovml rolls' or .by catching membersnttnched fixedly to endlesschains.:

Accordingto this invention twofopposite' sidewalls ofthe block'c'olumn channel are l limitador formed by, fojurl idle endless chaine 11.0,-

side. These chains travel over upper and lower disks -5, 6, but contrary to endless chains in previous automatic grindin aparatuses they have nothing to do wit t e ceding of the ,block column. Therefore the chains are not provided with any yprojections and arenot specially driven, they being onl taken along by the column fed forwat1 by the catchin members. The chains here have only to orm movable wall ortionaof the block channels so that the lock column need nowhere slide on fixed walls. There otherwise, under the high pressures, would be great friction and as a consequence thereof *displacements within the block mass, because it would be impossible to lubricate between the blocks and such walls.

But in order to enable the inner portions of the chains to. act as uuyielcling walls the chains on their outer side are supported by strong H-irons 7-, which 'at their lower parts are attached to the grinding boX and at their upper part are supported by a surroundin frame -9-. These H-irons carry the bearings for the disks -5, 6-. ner parts of the chains 4- slide tightly upon the irons --7-, andthe contacting portions of said membersmay be lubricated with graphite or other lubricant, vwhich thus will not -reach the block column; 'f

The feeding device proper may consist of WO grates -10'-' carrying the catching members and arranged on either block face side, conseiiuently in planes' perpendicular to the moving planes of the chains -4-. These grates contain preferably a large number of independently movable catching members --11, which in the drawing are indicated diagrammatically in the form of i`nclined sharp arms catching the end faces of the blocks (see Fig. 1) and adapted to be pressed agains'tthe'block's by 'hydraulic or othery means (not shown). Preferably'4 the catching members areI arrangedjn'r'nore horizontal and vertical rd'ws as indicated in Fig. 2. flfhese two grates are attached to a strong rectangular framA :412-1 which is movabld toand fro u four'stationary pillars *1B-1 .each of t the -f'ra e being construed as a hydraulic cylindelj -'14`- the pist n of which 1s xedlon theplllar (Fig. l).

' 'mn' channel being ing in t rrupted in o'rd constru tion of the grat frame -12 being in` tion a; shown, water pumpe into the botto l ders 4- beneath the istons l5-D All cylinde s, the frame; -1 l0- f'therefor yWill t to illustrate the and the feeding 'uppermost 'posi -g space of the cylinward. During this mo ement the'cathing-f the ressing 'and feedingforce ofthe-traine The inthe' column 'be-f "-41%, although such weonstructonshould be' avoided, if 'possible.

nder pressure is:

1the manufactured pulp,l

members 1I-'carried bythb framel auto-- matically exertv independent tightening .or clamping action u on th e blocks ofthe co1- umn, with which t eycolptact, ,ina direpn transverse'to the axisof, the Kcolumn. is is due to their normal inclinatidn; the downward .force Vwhich is applied by the feeding fram'eto the outer ends of the ,catching members causes them to tend -to assume horizontal 'ositions, since theirl inner 'endsv are caug t in the respective blocks o f the column. Conseuently, the last-mentioned ends ress inwar ly toward f'the' center vlofiv the ccv uriin with great force, which' serves' Ato ltransmit to t e innermost 'portion #of the column. All of the blocks receive'this 'applic-ation of force, whether'theyl be lon" or short,'or o'f odd shapes.' After the cate ingmembers thus en age the end'fa'ces of the blocksthey carry t e`whole block'colunin slowly downward against the stone '--1-'. The memb'ersl retain their hold until the-franiehas reached its lowermos't position. 'Now the 'supplyof Water under pressureto thecylinders is automatically' reversed by-'well--kno'wn` mechanisms (not shown, so 'thatthewater under pressure now enters the ,cylinders above thepistons -"l5'-'. The' frame Withthe'- l'grate's '--10'- th'erefor'inoves =pward, the'catching r're'mberslet g their hold upon the blocks and the'grindihgsfstopped'-2 I duringvth'eshort period as theV frame #12- is now, practically' without any resistance, moving 'rapidly'up to"itsfuppermost posi- 100 tion, in which thesup'ply jf-water. undery pressure is again. automatically rversed'.-"In 'l order to preventl the''block column 'during' this upward movementffrom.-leing'flited 'along upward, the 'frame-Q may beprovided `with movable' countvcatches'orjother stopping `members as indicated at,v4 -1;%1 The 'frame -12:-: thereupon ,beginsa ne'w workingy 'movement downwa-rdiu the. same manner as before. n 1t will be'seen'fthatthe 'whole-operation takes p lace quite automatically;rand-fthef" 'block column-"is carried uniformly'andY safely ragainstthe stone' withollt thewblocliaffromtheintro'tlu'ction uppermost even-to the-stone:v four guidngs'of I innermost,- nccdng to undergo any? free'fffallA 'or shift their` mutual-place in anywxvaysi- }HoWever, `theblck 'c'ha 'any great damagefrnafy' otieoirsebe curved el. lwithout causing- 'on theportion -located'above 'thebrame ,1 ijfxa? 5 In general, the detailsofthe"s:in1\ rent'ion may be varied to a-'grcat extent withoutdeparting from its esscntialfi'dea'u- :125' Having-now-descrihdthe inventing 'vifhaty f f 1. vIn ali-.apparatus forjgrindingwood;

instantiation-@fino a grinding member, a guide for a column of Wood l'Jlocksfleading to the `grinding member, a. feeding frame mounted for movement in a path parallel to the said guide, means for moving the frame, and catching members carried by the frame and mounted for independent movement thereon transverse to the path of movement of the frame for engagement with the blocks of the column.

il. In an apparatus for grinding Wood in the' manufacture of pulp, the combination of a grinding member, a guide for a column of Wood blocks leading to the grinding member, a feeding frame mounted for movement in a path parallel to the said guide, means for moving the frame, and catching members mounted on the frame for independent movement thereontransverse to the path of n'lovement of the frame for engagement with the blocks of the column, each catching memliier being inclined downwardly toward the block column and having its upper end connected to the feeding frame.

3. In an apparatus for grinding Wood in the manufacture of pulp, the combination of a. grinding n'lelnljier, a guide for a column of y Wood blocli's leading to the grinding member, a feeding frame surrounding the said guide, movable hydraulic cylinders carried by the frame, stationary pillars passing through the heads of the respective cylina piston positioned Within each cylinder and fixed upon the corresponding pillar, and catching members carried by the frame for f engagement with the blocks of the column.

4. In an apparatus for grinding wood in the manufacture of pulp, the combination of a grinding member, a guide for a column of wood l'llocks leading to the grinding member, feeding frame mounted for reciprocation'in a, path parallel lto the said guide, means Afor movingthe frame, catching members ci' ried by the frame for operative enga gement with the blocks of the column dur' ing movement of the frame toward the grinding member, and catchingmembers provided on the said guide for-engagement with the blocks of the column to secure the latter against retrograde movement.

5. In an apparatus for grinding Wood for the manufacture of pulp', the combination of a grindin f. member, a guide for a column of wood bloc cs leading to the grinding member and consisting of endless chains arranged idly along the column so that their inner reaches ,constitute the opposite walls of the guide and, support the sideA faces of the blocks,the said reaches being adapted to be carried along with the column in its feeding movement, ,stationary reinforcing hars supporting the said inner. reaches: of the chains, and independent means for feeding Ehe block column against the grinding'mem'- 6. In an apparatus for grinding wood for the manufacture of pulp, the combination of Ia grinding member, a guide for a column of wood blocks leading to the grinding member and consisting of endless Acha-ins arranged idly along the column so that their inner reaches constitutel the opposite walls of the guide and support the side faces of the blocks, the said reaches being adapted to be carried along with the column in' its feeding movement, lstationary reinforcing bars supporting the said inner reaches of the chains, and feeding means for `the column comprising a frame surrounding the guide, means for moving the frame along the guide, Iand independently movable catching members carried by the frame and disposed for engagement with the end faces of the blocks of the column.

In testimony -whereo'f I have signed my name to this specification in the presence of two subscribing witnesses.

IEDER CHRISTIAN SCIIANNING.

Witnesses Apex LA'ToN, MoonNs Burien. 

